Normalize conflict related messages.

* src/complain.h, src/complain.c (warn, complain): New.
* src/conflicts.c (conflicts_print): Use them.
(conflict_report_yacc): New, extracted from...
(conflicts_print): here.
* tests/conflicts.at, tests/existing.at: Adjust.

src/complain.c

@@ -1,5 +1,5 @@
 /* Declaration for error-reporting function for Bison.
-   Copyright 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2001, 2002  Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
@@ -130,6 +130,35 @@ warn_at (location, message, va_alist)
   fputs (": ", stderr);
   fputs (_("warning: "), stderr);
 
+#ifdef VA_START
+  VA_START (args, message);
+  vfprintf (stderr, message, args);
+  va_end (args);
+#else
+  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
+#endif
+
+  ++warn_message_count;
+  putc ('\n', stderr);
+  fflush (stderr);
+}
+
+void
+#if defined VA_START && defined __STDC__
+warn (const char *message, ...)
+#else
+warn (message, va_alist)
+  char *message;
+  va_dcl
+#endif
+{
+#ifdef VA_START
+  va_list args;
+#endif
+
+  fflush (stdout);
+  fprintf (stderr, "%s: %s", infile ? infile : program_name, _("warning: "));
+
 #ifdef VA_START
   VA_START (args, message);
   vfprintf (stderr, message, args);
@@ -165,6 +194,35 @@ complain_at (location, message, va_alist)
   LOCATION_PRINT (stderr, location);
   fputs (": ", stderr);
 
+#ifdef VA_START
+  VA_START (args, message);
+  vfprintf (stderr, message, args);
+  va_end (args);
+#else
+  fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
+#endif
+
+  ++complain_message_count;
+  putc ('\n', stderr);
+  fflush (stderr);
+}
+
+void
+#if defined VA_START && defined __STDC__
+complain (const char *message, ...)
+#else
+complain (message, va_alist)
+     char *message;
+     va_dcl
+#endif
+{
+#ifdef VA_START
+  va_list args;
+#endif
+
+  fflush (stdout);
+  fprintf (stderr, "%s: ", infile ? infile : program_name);
+
 #ifdef VA_START
   VA_START (args, message);
   vfprintf (stderr, message, args);
@@ -186,7 +244,7 @@ void
 #if defined VA_START && defined __STDC__
 fatal_at (location_t location, const char *message, ...)
 #else
-fatal (location, message, va_alist)
+fatal_at (location, message, va_alist)
   location_t location;
   char *message;
   va_dcl

src/complain.h

@@ -29,11 +29,17 @@ extern "C" {
 
 /* Informative messages, but we proceed. */
 
+void warn (const char *format, ...)
+  __attribute__ ((__format__ (__printf__, 1, 2)));
+
 void warn_at (location_t location, const char *format, ...)
   __attribute__ ((__format__ (__printf__, 2, 3)));
 
 /* Something bad happen, but let's continue and die later. */
 
+void complain (const char *format, ...)
+  __attribute__ ((__format__ (__printf__, 1, 2)));
+
 void complain_at (location_t location, const char *format, ...)
   __attribute__ ((__format__ (__printf__, 2, 3)));
 
@@ -46,7 +52,9 @@ void fatal_at (location_t location, const char *format, ...)
   __attribute__ ((__format__ (__printf__, 2, 3)));
 
 # else
+void warn ();
 void warn_at ();
+void complain ();
 void complain_at ();
 void fatal ();
 void fatal_at ();

src/conflicts.c

@@ -385,6 +385,7 @@ count_rr_conflicts (state_t *state, int one_per_token)
   return rrc_count;
 }
 
+
 /*--------------------------------------------------------------.
 | Return a human readable string which reports shift/reduce and |
 | reduce/reduce conflict numbers (SRC_NUM, RRC_NUM).            |
@@ -416,14 +417,32 @@ conflict_report (int src_num, int rrc_num)
       cp += strlen (cp);
     }
 
-  *cp++ = '.';
-  *cp++ = '\n';
   *cp++ = '\0';
 
   return res;
 }
 
 
+/*----------------------------------------------------------------.
+| Same as above, but report the number of conflicts a` la POSIX.  |
+`----------------------------------------------------------------*/
+
+static void
+conflict_report_yacc (int src_num, int rrc_num)
+{
+  /* If invoked with `--yacc', use the output format specified by
+     POSIX.  */
+  fprintf (stderr, _("conflicts: "));
+  if (src_num > 0)
+    fprintf (stderr, _(" %d shift/reduce"), src_num);
+  if (src_num > 0 && rrc_num > 0)
+    fprintf (stderr, ",");
+  if (rrc_num > 0)
+    fprintf (stderr, _(" %d reduce/reduce"), rrc_num);
+  putc ('\n', stderr);
+}
+
+
 /*-----------------------------------------------------------.
 | Output the detailed description of states with conflicts.  |
 `-----------------------------------------------------------*/
@@ -443,8 +462,9 @@ conflicts_output (FILE *out)
       if (conflicts[i])
 	{
 	  fprintf (out, _("State %d contains "), i);
-	  fputs (conflict_report (count_sr_conflicts (s),
-				  count_rr_conflicts (s, TRUE)), out);
+	  fprintf (out, "%s.\n",
+		   conflict_report (count_sr_conflicts (s),
+				    count_rr_conflicts (s, TRUE)));
 	  printed_sth = TRUE;
 	}
     }
@@ -530,32 +550,15 @@ conflicts_print (void)
 
   /* Report the total number of conflicts on STDERR.  */
   if (yacc_flag)
-    {
-      /* If invoked with `--yacc', use the output format specified by
-	 POSIX.  */
-      fprintf (stderr, _("conflicts: "));
-      if (src_total > 0)
-	fprintf (stderr, _(" %d shift/reduce"), src_total);
-      if (src_total > 0 && rrc_total > 0)
-	fprintf (stderr, ",");
-      if (rrc_total > 0)
-	fprintf (stderr, _(" %d reduce/reduce"), rrc_total);
-      putc ('\n', stderr);
-    }
+    conflict_report_yacc (src_total, rrc_total);
   else
-    {
-      fprintf (stderr, _("%s contains "), infile);
-      fputs (conflict_report (src_total, rrc_total), stderr);
-    }
+    warn ("%s", conflict_report (src_total, rrc_total));
 
   if (expected_conflicts != -1 && !src_ok)
-    {
-      complain_message_count++;
-      fprintf (stderr, ngettext ("expected %d shift/reduce conflict\n",
-				 "expected %d shift/reduce conflicts\n",
-				 expected_conflicts),
-	       expected_conflicts);
-    }
+    complain (ngettext ("expected %d shift/reduce conflict",
+			"expected %d shift/reduce conflicts",
+			expected_conflicts),
+	      expected_conflicts);
 }